Comment 2 for bug 1828683

Hi Jimmy, sorry about the trouble you're facing. The transition from 6.1.5 to 6.1.6 saw libreoffice-ogltrans merge into libreoffice-impress, though unfortunately it looks like the control file is not configured correctly to facilitate that replacement.

You'll need to run the following to complete the upgrade at this point:

sudo apt --fix-broken install